A clip comparing the sounds of different piston engines, grouping them in terms of related engine configurations (similar dominant orders: rpm * number of cylinders / 2 (as four-stroke, half the cylinders fire per revolution), where dominant orders of one (say 6 cylinder) will be similar to the first overtone of the dominant order of the other (say 3 cylinder) and so on). :) Original clips 3 cyl • TRIUMPH 900 DAYTONA 3 Cylinder T300 engine... Triumph 6 cyl • Video BMW S54 Engine Swap 12 cyl • Video Lamborghini Countach 4 cyl • Civic Si vtec sound Honda Civic Si 8 cyl flatplane • 340 km/h en Ferrari 430 Scuderia NovitecRo... Ferrari 430 Scuderia 2 cyl • Harley Evo Sound . . . Harley Davidson Evo 4cyl uel • 1999 SUBARU Impreza WRX SIT Version 6!! K... Subaru Impreza 8 cyl crossplane • 1968 Mustang acceleration ride along cam 3... Ford Mustang 302ci 5 cyl • 1999 Volvo S40 BTCC Race Car - Start Up, F... Volvo S40 10 cyl • Bathurst onboard David Russell Lamborghini... Lamborghini Gallardo